Improvement in stamp-batteries



l. W. FORBES.

Improvement in Stamp Batteries. I

No. 115,295. v PatentedMay 30,1871.

FIGURE l. l Flc una 2.

@ay f frases ISAAc WILLIAM FORBES,

OF LA PORTE, INDIANA.

Specication forming part of Letters Patent No. 115295, dated May 30,1871; antedated May 26, 1871.

To all whew?,l it may concern:

Beit known that I,ISA A0 WILLIAM FORBES,

of La Porte1 in the county of La Porte and State of Indiana, haveinvented new and useful Improvements in Mortars for Stamp-Batteries;

and I do herebydeclarethe following to be a clear and exact descriptionof the nature thereof sufficient to enable others skilled in the art towhich my invention appertains to fully understand and use the same,reference being had to the accompanyingdrawing making a part of thisspecification, in whichl y Figure l is 'a central longitudinal Sectionof a mortar, with dies, elastic substance, and standards, and thefoundations upon which theyrest, for a double stamp-battery, with bridgebeneath for holding the standards l l down and raising the dies whenrequired. Fig.

2 is a sectionalviewin line c c, Fig. 1. Fig. 3 is a top or plan View.Fig. 4 is a sectional view of the mortar portion of the Standard,elastic substance, and sill with screen and l chuteattached, drawn ona'larger scale than the preceding figures. Fig. 5 is a view of the upperportion of the mortar complete as bolted upon the sill, with thestrainer and chute.

lVIy invention relates to mortars for quartzbatteries or batteriesof alike nature; and its objects are toproduce a mortar which will be freefrom injurious effects ofthe blows dealt o'n the same, and to preventthe destruction of dies` and stamps when blows are delivered with greatforce by the battery. The firstmentioned object is attained by themortar having an opening or openings relatively to u g the number ofstamps used, andfprovided with tubes or thimbles,.in` which standardsare inserted, as Ihereinafter describedg The second object is attainedby means of an elastic suby. stance placed between" the die vand thestandard upon which it rests, and which Standard] is supported andsecured upon a ybed of timber, as hereinafter described.

In the drawing, A represents the mortar provided with one `or morethimbles, A. B B arethe dies. C is the elastic substance; and

D D are standards, upon which the dies and elastic substance rest, andwhich pass upin the thimbles of the mortar. E is the cross or bridgebar,designed `to hold the standards down and to raise the dies when they areto be replaced by new ones, or when new elastic substance is required tobe placed beneath the same. Bolts F Fpass through theiron stand-v ardsor shafts and the sills on which they rest into the bridge-bar below, towhich they are secured, and hold 'the standards down. G G are longbolts, which passthrough the lower iiange of the frame of the battery,through the sill and the bed-timbers and bridge-'bar E, and securedbeneath by nuts G G', which are let in the lower portion ofthebed-timber in which the bridge-bar works. These bolts pass a sufiicientdistance through said nuts, with jamnuts upon each side ofthebridge-bar, for the purpose of raising that bar or screwing it down, asthe case may be-bolts G G being screwed.- up or down as may be required.These bolts are designed to hold standards D D in 'their position iirmlyto their beds, and raise dies B B up out of the thimbles of the mortarwhen required to replace them with new ones, or to put in new elasticsubstances or other `material for-the purpose of raising them to theproper height as they wear away until they are renewed. When they areraised a sufficient height to take 'them out, then bolts G are screweddown, which hold the standards D D in their proper positions iirmly totheir bed by means of bolts F, which are screwed in the bridge-bar, asrepresented inl Figs. l, 2, and 4. H is the strainer; I, the chute; andK are pieces of pipe through which pass bolts G, which are designed tokeep the water or dampnessfrom bolts G G and prevent rusting. L is apacking in the thimbles around Vthe standard, which forms a stufngbox. t

In the construction of the mortar the lower part should extend down,forming thimbles or tubes, according to the number of stamps. If a longbattery should be used, the mortar may be formed in the shape of a box,with one block fitting in the same for receiving the dies and blows; orholes may extend through the mortar for each stamp to receive thestandard which Apasses in the same, upon which the elastic substanceVand dies are placed. If a circular battery is used, with a number ofstamps, one large holevmay be put through the mortar, which will extenddown and form a thimble to receive one standard for the dies,

or to receive a` skeleton frame with holes to receive the standards anddies through the same, relatively to the number of stamps; or the mortarmay extend down and form as many thimbles as there are stamps belongingto the battery, and which thimbles Will re ceive the standards, elasticsubstances, and dies. But in all cases the thimble or thimbles extendingdown to receive the standards or their equivalents should be Wellpacked,as with hemp, manila, or something equivalent, for the purpose ofpreventing the mortar from leakage of Water, pulp, or quicksilver. Thetubes or boxes should extend down sufficiently from the bottom of themortar to receive the standards. The standards should rest upon sills ora bed of timbers separate and independent from those upon which rest thebattery and mortar. They should extend up a sutlicient height in themortar, tubes, or thimbles to receive the packing.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The mortar A, formed with one or more open thimbles, A', incombination with standards D and die B, substantially as and for thepurpose described.

2. The bar E and bolts G, in combination with standard D and die B,substantially as and for the purpose described.

3. The combination of the mortar A, constructed as described, elasticsubstance C, standard D, bolts F G, bar E, packing L, and die B,constructed, arranged, and operating substantially as described.

4. The relative arrangement Within the thimble A of the elasticsubstance C, die B, and standard D, substantially as and for the purposedescribed.

I. W. FORBES.

